.Attribute Medication, Posted online: 18 September 2024 doi:10.1038/ s41591-024-03300-3Genomic and epidemiologic studies uncovered that an unfamiliar reassortant viral lineage of the Oropouche virus, which has been actually distributing in the western side Amazon location of Brazil for about a decade, is related to the recent individual outbreaks between 2022 and 2024.